I am looking at a pair of these boots. Can you guys give me an idea of how accurate the sizing on these are? I am curious because the liners can't be removed.

sizing is pretty spot on. I wear size 8US or Mondo 26cm.
they pack out pretty quick after one day on the slope.
I would say they are on the narrow side of the spectrum in terms of width.
stiffness is about 6-7 so decently stiff.
the lacing system is pretty neat allows you have two zones at the ankle and chin plus the toe strap.
only thing about it is I have big calfs and seems like the laces are just about long enough. also the pocket where the lace pull thing tucks into is not deep enough so they come out easy. other than that pretty solid boots.
I put them on and they never become loose after a day of riding.

Anyone ever put aftermarket insoles in Salomon fusion boots like the F3.0? I'm currently looking at F3.0s, but these "fusion liner" insoles are extremely narrow and the space is quite tight. I compared my Shred Soles from my same size Vans and they are way too wide. Maybe if I bought Shred Soles a size down they might work.

Wondering if anyone has found an insole with a better arch that will fit these things?

I picked up some Medics (Bigfoot) and they seem to be too tall in the heel and mess up the heel lock some and now I get lift. I'm under the impression that the Medics won't packout and conform like other orthotics so they probably won't get any better. Maybe I should have gone for the Cush's.